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Altera_Forum
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12 years ago

A FIR FILTER , I cant understand

hi everyone: I just read a part of vhdl code . The code is used to do filtering. The data avSigCreg(9) which is summed will be taken into a digital filter. The code is shown below: ---------...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Thanks tricky

CSRealReg(0) <= CQRealReg(0)(23) & CQRealReg(0)(21 downto 0). I think the designer ignored the CQRealReg(0)(22) . This process is used to sign extension?